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Finding the Fourth Proportional to 118,782.19, 163,919.46 and 65,069.13

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Solution

The fourth proportional to 118,782.19, 163,919.46 and 65,069.13 is: 89,795.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,782.19 : 163,919.46 = 65,069.13 : x
  2. Step 2: Convert to fraction form
    118,782.19/163,919.46 = 65,069.13/x
  3. Step 3: Cross multiply
    118,782.19x = 163,919.46 × 65,069.13
  4. Step 4: Simplify right side
    118,782.19x = 10,666,096,652.27
  5. Step 5: Solve for x
    x = 10,666,096,652.27/118,782.19
  6. Step 6: Final answer
    x = 89,795.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.